testing-core-processors

80 / 100 · Low risk

Fine to try. Some of what it can do is expected: a coding skill usually runs build and test commands.

By mastra-ai/mastra (GitHub) · coding · 29,480 stars · scanned at commit 43d1e9c

Use when writing or debugging integration tests for error processors in packages/core/src/processors/. Covers the MockLanguageModelV2 pattern for simulating API errors and verifying retry behavior, plus the build prerequisites for focused vitest runs.

Works with any agent that supports SKILL.md skills.

What this skill can do

Downloads and installs other software

The author does not mention this.

Found in 2 places.

.agents/skills/testing-core-processors/SKILL.md, line 100npx vitest run packages/core/src/processors/my-processor.test.ts
.agents/skills/testing-core-processors/SKILL.md, line 103npx vitest run packages/core/src/processors/

Runs commands on your computer

The author does not mention this. Expected for a coding skill.

Found in 1 place.

.agents/skills/testing-core-processors/SKILL.md, line 100npx vitest run packages/core/src/processors/my-processor.test.ts

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'testing-core-processors' ] || [ -L ~/.agents/skills/'testing-core-processors' ]; then echo 'A skill folder named testing-core-processors already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/mastra-ai/mastra' "$d" && git -C "$d" checkout --quiet '43d1e9c16d6681a66636e318c34118597911f7c5' -- '.agents/skills/testing-core-processors' && mkdir -p ~/.agents/skills && cp -R "$d"/'.agents/skills/testing-core-processors' ~/.agents/skills/'testing-core-processors' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'testing-core-processors' ~/.claude/skills/'testing-core-processors' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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Score history

Date	Version	Score
2026-11-12	`43d1e9c`	80

Also found in

Identical copies of this skill exist at:

mastra-ai/mastra/.claude/skills/testing-core-processors